Apparatus for maintaining constant the temperature of metal working rolls



March H93 E935. EQT. LORIG Er AL 399949721 APPARATUS FOR MAINTAINING CONSTANT THE TEMPERATURE OF METAL WORKING ROLLS Filed NOV. 13, 1933 5 Sheets-Sheet l y:is

APPARATUS ron i l 'rmi 'ramener norms y wenn Price Edwin '.li. Lorig and @arl iE. Moore, Gary, ind., asf signora to American Sheet and Tin Plate Company, a corporation of New .1I ersey Application November 13, i933, Serial No. 697,862

2 Meer This invention relates to a method and appa- "ratus for maintaining constant the temperature of metal working rolls, and particularly those employed in cold reduction units of the i-high type, although not limited thereto. y In the use of metal working rolls for processing various comercial shapes considerable diiliculty arises if their temperatures are not maintained constant. it -is impossible under these circum- -v stances to properly maintain the contours oi the rolls, and uneven processing results. This is particularly true in the manufacture of continuous strip material for coercial sheets and plates by the use of cold reduction units for obtaining 15, :1"11 shed surfaces. Y

For some time past cold reduction units of the A well known li-high" type have been used to effeet reductions of very substantial lengths of strip material. However, this operation has not been attended with the most satisfactory results for the reason that the rolls acquire heat not only from irictio contact with the material being processed, but from the internal heat generated in the terial even though it is initially cold; d their contours are accordingly l i. fa ed.

At the present time the settings ofp the various rolls are vfrequently changed in an attempt to overcome changes in the contours of roll bodies accruing from increments oi heat imd to 3u them, which heat increments pyramid in the rolls, increasing the temperature to the point where steel or alloy rolls tend to p or suddenly swell, thus causing loss oi contour control entirely, with resultant damage or loss of processed 35- terial.

In accordance with the teachings of the present invention all of these dimculties are overcome to such an extent that processing may be carried on with highly-emcient results in the yield oi product, and the obviating of frequent and troublesome adjusting operations. One object of the present invention is to provide a novel method and apparatus for maintaining constant and uniform the temperature of metal l@` lrolls throughout their lengths, and at the mme time provide means for maintaining sufnciently low roll temperatures at relatively high rolling speeds to prevent pumng of the rolls.

another object is the provision of means for selectively spraying a coolant on various portions oi the bodies of metal working rolls, resulting in the maintenance of a constant temperature and diameter.

These and further objects will be apparent after referring to the I t: in which:

Figure 1 is an elevation of the device of the invention as used in connection with a i-high mill, the latter being shown in section.

Figure 2 is a side elevation of part of the apparatus of Figure 1. 5

Figure 3 is a sectional end view on the line m-IJI of Figure 2. v

Figure 4 is a view similar to Figure 3 of the apparatus at another stage of operation.

Figure 5 is a fragmentary sectional detail elevation of part of the apparatus.

Figure y6 is an elevation of a part of the detail of Figure 5.

Referring more particularly to the drawings, the letter A designates apair of large backing-up rolls between which there is disposed a pair of smaller metal working rolls B.

A trackway 2 is provided on either side oi the backing-up and metal working rolls A and B, respectively, and adapted to support a wheeled carriage 3.

A pair of dispensing outer tubes are provided adjacent each of the metal working rolls Bf-B, as at 4,5, 6 and '7, and on either side thereof. The dispensing tubes 4, 5, 6 and 7 are provided with apertures 4-, 5, 6a and 'Ia arranged arcuately throughout asubstantial portion of their respective lengths. 1n practice, the /apertures da, 5m

, andl 6 are adapted `to curve toward and away from their upper mid-portions, while the apertures fi* of the lowermost tubes 7 curve toward and away from their lower mid-portions.

An inner tube 8 is journaled for a substantial portion of its length in each of the outer dispens ing tubes e, 5, 6 and '7, and provided with a plurality of apertures 8a which are arranged in a position parallel with respect to its axis. These parallel apertures 8a are adapted to be successively aligned with the apertures 4a, 5', 6 and i oi the various outer dispensing tubes.

Each of the apertures 8SL is provided with a standard disk type spray nozzle 10 having a groove lofL on each of its sides which are adapted to ea'xtend in the direction of the axis of the tube 8, and a concentric opening or snrav orifice 10b. As shown in Figure 5, the disks 10 are disposed in seats 8P in the respective apertures 8a and aportion of the metal of the tube 8 is-upset,`as at 8G, t0 maintain the same in position.

A collar 1 2 is connected to one of the ends of each of the various tubes 8 and those for the low er dispensing tubes 6 and 7 are connected together by means of a. link 14. The collars 12 for the tubes 8 in each of the lower dispensing tubes 6 and those for the upper dispensing tubes 4 and gg dispensing tubes 4 and 5 are connected together -by means'of a common link 15, which carries a pin 16 intermediate its length. A lever 17 is provided with a slot 17 in which the pin 16 is adapted to ride, and is pivoted, as at 18, to the wheeled carriage 3. The lever 17 carries at its outer extremity a handle portion 19 and an adjacent pin 20, a plate 21 being secured to the carriage 3 and provided with a plurality of apertures 21al in which the pin 20 is adapted to seat. Each of the carriages 3 carries a supply conduit 22 and connections 23 for supplying the inner tubes 8 of each of the upper 5, While a similar supply conduit 24 is provided with connections 25 for supplying the inner tube 8 for each of the lower dispensing tubes 6 and 7. 'I'he supply conduits 22 and 24 on each of the carriages 3 are each connected to a pipe 26 and a valve 27, to which there is connected a pivotal coupling 28, sleeve coupling 29 and a pipe 30. The pipes 30 are each connected at their other ends to a sleeve 31 which is, in turn, connected to a pivotal coupling 32. A suitable coolant is supplied to the pivotal coupling 32 in any suitable manner.

Referring to Figure 1 of the drawings, the material being processed is indicated by the letter S. If it is desired to reverse the direction of application of Lawrence S. Dahl rolling in accordance with well known principles, scraping or stripping devices are employed for cleaning the roll bodies on the sides on which the strip emerges from between the metal working rolls B. 'Ihese stripper devices are' generally indicated at X, and form no part of the present invention, being the subject matter Aof a co-pending and John L. Peet, filed October 19, 1933,- entitled Method and apparatus for cleaning metal working rolls, and bearing Serial No. 694,315.

In practice, the disposition of the apertures 8EL of the inner tubes 8 with respect to the arcuated apertures of each of the outer dispensing tubes 4, 5, 6 and 7 is suitably adjusted by the handles 19 of the levers 17 on each side of the mill. Due to the parallel relationship of each of the series of apertures 8a, the operation of the various arcuated apertures is progressed from the center of the tubes outwardly and inwardly from their ends. 'Ihis is for the reason` that it may be desired to cool the ends, or intermediate portions, of the roll bodies to the exclusion of other areas. The dispensing tubes 4, 5 and 6, function simultaneously, while the lowermost dispensing tube 7 is arranged oppositely for the reason that even though the former group is inoperative the latter will still function at a point adjacent the bottom of the lower working roll B and tend to cool it and indirectly its cooperating backing-up roll A.y The quantity and intensity of the spray for at least oner o5 the metal working rolls B can be regulated so as to be progressively, proportionately and simultaneously increased or decreased toward or away from the ends thereof.

Referring to Figures 3 and 4 of the drawings, the various stages of operation of the dispensing tubes 6 and 7 are illustrated.

While we have shown and described one specic embodiment of our invention it will be understood that we do not wish to be limited thereto, since various modifications may be made without departing from the scope thereof, as defined in the following claims.

We claim:

1. In combination with a metal working mill, a carriage mounted on each side of said mill and adapted for movement with respect thereto, a plurality of tubes mounted on each of said carriages and having apertures arranged arcuately throughout a substantial portion of their lengths, a second tube journaled throughout a substantial portion of its length in each of said flrst named tubes and having apertures arranged for successive alinement with the apertures in said rst named tubes when said last named tubes are rotated, means for enabling the simultaneous rotation of each of said last named tubes, means carried by said carriage for conducting a. coolant to each of said last named tubes, and supply means for said conducting means.

2. In combination with a metal working mill, a carriage mounted on each adapted for movement with respect thereto, a plurality of tubes mounted on each of said carriages and having apertures arranged arcuately throughout a substantial portion of their lengths, a second tube Journaled throughout a substantial portion of its length in each of said rst named tubes and having apertures arranged for successive alinement with the apertures in .said lrst named tubes when said last named tubes are rotated, means for enabling the simultaneous rotation of each of said last named tubes, means carried by said carriage for conducting a coolant to each o1' said last named tubes, supply means for said conducting means, and slip couplings for said supply means.

' EDWIN T. LORIG.

CARL E. MOORE.

side of said mill and 

